Vortex theory
[电] 漩涡理论
🧩 词语组成解析
vortex
['vɔ:teks]
n. [航]涡流;[物]涡旋;（动乱，争论等的）中心;旋风;
🗣️ 情景例句
He was very helpful to me, remember?
他帮过我大忙， 记得吗？
He has a letter.
他有一封信。
And he promptly handed the sheet of paper to the gaoler.
说完，他一下子把信递给狱卒。